/*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbfilter.impl;

import org.jbfilter.core.fcomps.single.CompareFilterComponent;

abstract class _CompareFilterComponentBeanSupport<E, T, C extends CompareFilterComponent<E, T>>
	extends
		_SingleFilterComponentBeanSupport<E, T, C> {

	_CompareFilterComponentBeanSupport(C filterComponent) {
		super(filterComponent);
	}
	
	@Override
	protected Boolean nullTestingPassed(T valueToTest, T value) {
		// null testing implies '=' '<=' or '>='
		if (_FilterComponentImplUtils.containsEqualCase(getFilterComponent())) {
			return super.nullTestingPassed(valueToTest, value);
		} else {
			return null;
		}
	}
	
	@Override
	protected boolean callBackFromSingleFilterComponentBeanSupport(T valueToTest, T value) {
		return _JbfilterComparatorKeywordBean
			.fromJbfilterComparatorKeyword(getFilterComponent().getComparatorKeyword())
			.pass(calculateCompareValue(valueToTest, value));

	};
	abstract protected int calculateCompareValue(T valueToTest, T value);

}
